This incredibly clear cell phone video shows the moments after this car flipped upside down and landed facing the opposite direction on top of railroad tracks. Along Jonesboro road in -- The man who shot the video was first to reach the car the woman trapped in the driver's seat was unconscious and several months pregnant. This -- opening the door she it will be -- and started saying that she's pregnant. She asked if the driver was OK CR -- showed us the video at the car wash business where he works off terra boulevard. He was running -- Wednesday morning when he saw what led to this rack he said the car was exiting I 75 when it seemed to hit another car. Flipped upside down in soared over several lanes of traffic it was. I've never seen anything like it spent little time as -- volunteer firefighter in Colorado and I've never seen it rightly that goes something like that. You could hear the woman cry out as crews start to pull her out of the car and carry her over the tracks to a waiting ambulance. -- can be heard on the video anxious about the woman's condition. He -- fuel is already leaking from the cars he woke her up. He also noticed something he believes kept her alive she was holding her stomach she did have her seatbelt -- -- that's probably what saved her life.

This transcript has been automatically generated and may not be 100% accurate.